Improvement in stove-pipe thimbles



CEPHAS A. .BUTTLES.

Stovepipe-Thimble.

No. 121,329, Patented Nov-28,1871.

- tofore filed by me.

UNITED STATES PATENT QFFIGE,

GEPHAS A. BUTTLES, OF MILWAUKEE WISCONSIN.

IMPROVEMENT IN STOVE-PIPE THIMBLES.

Specification forming part of Letters Patent No. 121,329, dated November 28, 1871.

To all whom it may concern:

Be it known that I, GEPHAs A. BU'rTLEs, of the city and county of Milwaukee, and State of Wisconsin, have invented an Improved Stove Pipe Thimble; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawing forming part of this specification, inwhich- Figure 1 is aperspective view, a portion of the thimble having been broken away; and Fig. 2 is a cross-section of one side of the thimble.

Similar letters of reference in the accompanying drawing denote the same parts.

This invention relates to that class of stovepipe thimbles in which the thim ble is constructed with two concentric sheet-metal bands united and supported by two sheet-metal or castiron plates; and the invention consists in the peculiar construction of the upper plate, as I will now pro ceed to describe.

In the drawing, A is the upper, and B the lower plate; while 0 and D represent, respectively, the inner and outer sheet-metal bands. The outerband is interposed between the upper and lower heads, as usual, to brace them apart, and the inner band has its edges turned over the edges of the heads to lock them together. The lower edge of the outerband rests against arib cast or formed on the upper side of the lower head, or against the convex surface of said lower head, as described in an application for Letters Patent here- The upper head or plate is formed with a fiat horizontal rim, to, which fits upon the floor around the hole cut for the stovepipe, with a downward bend, e, the outer side of which sustains and holds the upper edge of the band D; and with an inner rim, 1?, sunk slightly below the level of the floor, so that a person stepping near the pipe will hear his weight upon the part a, which is supported by the floor beneath it, but not upon the part i, which is not thus supported. The whole of the part imay be perfectly flat and horizontal; or, preferably, it may be made slightly conical, its surface declining from the inner edge to the bottom of the bend c, as shown, the object of such combination being to deflect the lint, dust, &c., away from the heated pipe. The holes in the upper head are placed at or near the bottom of the inclination in order that said lint, dust, 850., may not accumulate upon the depressed portion of the plate, but may fall through into the lower apartment.

When constructed so that the upper edge of the band (J is below the level of the rim a the hole left by the removal of the stove-pipe in summer may be covered by a flat circular iron plate fitting upon the depressed rim 1' so as to be even with the floor. The upper head thus form ed may be made either of sheet metal or cast-iron, and when made of the lastmentioned material it may be cast so thin as to be scarcely heavier than sheet-iron. Notwithstanding the lightness of its construction the head will support all the weight liable to be thrown upon it, the bearing point of such weight being in the rim to, which rests directly upon the floor.

Having thus described my invention, what I claim, is

The stove-pipe thimble, herein described, consistin g of an upper head, A, constructed with the parts a e 2', as represented, in combination with the lower head B and the bands 0 D, substantially as and for the purposes specified.

O. A. BUTTLES.

Witnesses:

E. F. PIERCE,

H. R. KING. 154 

